Multiple-key lock.



E. ROSE.

MULTIPLE KEY LOCK.

.APPLIGATION FILED MAY 14, 1912 1,057,884, A Patented Apr. 1, 1913.

3 SHEETS-SHEET 1.

Ill

[NVENTQR A Home E. ROSE. MULTIPLE KEY LOCK.

APPLIOATION FILED MAY 14, 1912.

1,057,88. Patented Apr. 1, 1913.

' 3 SHEETS-SHEET 2.

E. ROSE.

MULTIPLE KEY LOCK.

APPLIOATION FILED MAY 14, 1912.

1,057,884. PatenSed Apr. 1, 1913.

3 SHEETS-SEEBT 3.

WITNESSES I INVENTOR COLUMBIA PLANOGRAPH c0.,wAsmNfl1'ON. D. c.

' key.

UNITED STATES PATENT OFFICE.

EDWARD ROSE, 0F MAMARONECK, NEW YORK, ASSIGNOR TO THE YALE 8r, TOWNE MANUFACTURING COMPANY, OF STAMFORD, CONNECTICUT.

MULTIPLE-KEY LOCK.

Specification of Letters Patent.

Patented Apr. 1, 1913.

To all whom it may concern:

Be it known that I, EDWARD Rose, a citizen of the United States, residing at Mamaroneck, in the county of \Vestchester and State of New York, have invented certain new and useful Improvements in Multiple-Key Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in looks, the object being to provide a multiple key lock with mechanism that may be operated only by a shut out key, so that when the bolt is projected by said shut out key, it cannot be retracted either by the change or master keys.

A further object is to provide means operated by said shut out key for locking the tumblers against movement, and also for deadlocking the bolt whereby picking the lock will be absolutely prevented.

A further object is toprovide means whereby high bitted change tumblers may be operated by a low bitted master key.

A further object is to provide an improved antifriction latch actuating device between the knob spindle and latch bolt.

lVith these and other objects in view my invention consists in the parts and combination of parts as will be more fully described and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view of the lock with the cover removed and showing the position of the parts after the dead bolt has been shot by the shut out Fig. 1 is a view in section on the line a0 m of Fig. 1. Fig. 2 is a view of the lock with the dead bolt retracted and the latch bolt retracted by turning the knob in the direct-ion of the arrow. Fig.3 is a View showing the latch bolt retracted by turning the knob in the reverse direction. Fig. 4 is a view showing the action of the lifting or master key tumbler upon a change key tumbler through the swinging lifter. Fig. 5 represents the action of the lifter, change tumbler, and lifting fence tumbler, when operating a high bitted change tumbler by means of a low bitted master key. 'Fig. 6 shows the action of the shut out looking tumbler and guard slide when the bolt is shot by the shut out key. Fig. 7 shows the shut out key as having shot the bolt and just leaving the lifting or master tumbler and in contact with the shut out tumbler. Fig. 8 is a view showing the action of the shut out locking tumbler and guard slide when the bolt is shot by the shut out key. Figs. 9, 10, and 11 are views respectively of the shut out, master and change keys, and Figs. 12 to 21 inclusive are views of parts detached.

1 represents a casing, 2 the latch bolt and 3 the knob spindle roll back provided with antifriction rollers 4 mounted on the pins 5. The rollers 4 are located above and below the horizontal center of the roll back with the upper one bearing against the spring pressed pivoted lever 6 and the lower one against the pivoted lever 7. Lever 7 is pivoted to the lock case intermediate its ends, with one end in contact with the lip 8 at the tail end of the latch bolt 2, and is provided adjacent its opposite end with a pin 9 carrying a roller which rests and moves in elongated slot 10 in lever 6. It will therefore be seen that the levers 6 and 7 are connected so that when one is moved, the other will also be moved, hence when the knob roll back 3 is turned in one direction, as in Fig. 3 the upper roller 4. engages the upper lever 6 the movement of which moves the rear end of lever 7 rearwardly and retracts the latch bolt, and when the knob roll back is turned in the opposite direction, as in Fig. 2, the lower roller 5 engages lever 7 and shifts its rear end rearwardly and thus retracts the bolt. The levers 6 and 7 are normally held in contact with the rollers 1 and 5 by the spring 11, and the latch bolt 2 is normally held in projected position, by the pivoted lever 12 engaging pin 13 on bolt 2, and by the spring 1 1 which yieldingly holds the lower end of lever 12 in contact with the pin 13. With this construction, there is no loose movement between the knob roll back and the latch bolt, and the roller contact between the parts reduces the friction and provides for an even and smooth movement from start to finish.

15 is the dead bolt, provided at its rear end with a key sweep, and intermediate its ends with the slot 16, through which the post 17 on the lock case 1 projects, and mounted on the bolt 15, and movable therewith, is the spring pressed tumbler 18, carwith the rear end of the bolt, and is yieldingly lielchtliereagainst by the spring 21, as clearly shown in Fig. 6.

Pivotally mounted on the post 17 and resting in contact with the bolt 15 is the shut out locking tumbler provided at its upper end with a laterally projecting finger 23, the function and operation of which will be disclosed later on. provided at its front edge with a bolt deadlocking projection 24, and at its lower end with a locking notch 25 adapted to receive a lip 26 at the lower end of the shut out looking fence 2?, which latter is pivoted to the lock case and is operated by the shut out tumbler 30 shown detached in Fig. 16

Mounted on post 17, and in contact with the shut out locking tumbler 22 and the shut out locking fence 27, is the lifting tumbler 28, having an open center within which the swinging lifter 29 moves, the latter being iivotally attached at its front end to the lifting tumbler This lifting tumbler is provided at its lower front end with a headed pin 29 on which the shut out tunr bler 30 is mounted, the said tumbler 8O having an inverted L-shaped slot 31*, through which the pin 29 passes, and which permits the tumbler 30 to have a pivotal, as well as an upward and downward and forward and backward sliding movement. This shutout tumbler 30, is also provided with a, triangular opening about midway its length into and through which the pin 31 on the shut out looking fence 27 projects, so that when the tumbler 30 is actuated by the engagement of the shutout key during the first movement of the key in a direction to retract the bolt, the shut out looking fence will also be actuated in one direction by the engagement of the wall of the opening in the tumbler 30, and when the tumbler 30, is actuated by the engagement of the shut out key after the bolt has been projected as shown in Fig. 7, the toe 32 on lever tumbler 30 will engage the lip 26 on shut out locking fence 27 and elevate said lip to release the lower end of shut out looking tumbler 22 with which it cooperates. This tumbler 30 is also provided with a pin 30 resting above and on the horn 28 of tumbler 28, so that when tumbler 28 is lifted, shut out tumbler 30 will also be lifted.

Mounted on the .post 17 are a series of change key tumblers 33, which are actuated directly by the change keys which cooperate with the fence 19 on lifting fencetuinbler 18, and which are also engaged by the swinging lifter 29 carried by lifting tumbler 28. The upper or outer one of these change tumblers (shown in Fig. 1 1) is provided with two pins 3 1 and 35, on the upper one (3 1) of which is mounted the tumbler locking lever 36, provided at its front end with an inwardly bent end 37 which latter This tumbler 22 is also rests 011 and overhangs the entire series of tumblers. This lever 36 is L-shaped in plan, and is provided at its upper rear end with an elongated slot 37 through which passes the pin 38 rigidly secured to the lock case, so that when the change tumblers are moved, the tumbler locking lever fulcrums on pin 38 and moves with the change tumblers.

Pivotally mounted on pin 35 on the out-er change key tumbler 33, is the locking lever dog 38, shown detached in Fig. 12. This lever is L-shaped and is adapted to beens gaged by a step or hitting on the shut out key, and is provided at the free end of its upwardly projecting member, with a shoulder 39 adapted, under certain conditions, to engage the bent end 37 of tumbler locking lever 36, and prevent any of the tumblers from being raised by picking instruments or by any key other than the shut out key, and this lever 38, is itself locked against movement, by the finger 23 of the shut out looking tumbler 22, which as shown in Fig. 1, rests in advance of locking lever dog 38, and when the dead bolt 15 has been pr0- jeoted by the shut out key, rests in contact with said dog 38 and holds same against movement.

40 is a guard slide located justabove the dead bolt 15 and mounted on a stud 411 projecting from the lock case 1. Stud 11 passes th'rougl'i an elongated slot in the slide, and the latter is provided with a lip 4-2, projecting downwardly and resting in advance of a shoulder 43 on the dead bolt 15 so that during the forward movement of the bolt 15, when the latter is actuated by a change key,the shoulder 18 thereon coming in contact with the lip 12 shifts the slide forwardly. The slide is provided with a pin e 1 engaged bya spring 15 secured to stud 4-1. As the slide a0 is moved by the bolt the pin 4% moves under the spring 45, and the lip 412 is therefore, always forced downwardly into the path of the shoulder 13 on the deadbolt. The locking lever dog 38, change tumblers 33 and tumblers 22 and 18 are each provided with a spring which tends to force them into their normal positions.

Having described the relative positions of the several parts of the dead bolt mechanism, ll will now describe the operation of the lock.

Normally, and when the dead. bolt is retracted, the lip 26 on the shut out locking fence 27 rests in advance of and against the tion to permit the fence 19 on lifting fence tumbler 18 to move with the bolt. It also shifts the upper end of the locking lever dog 38 forwardly thus freeing the tumbler looking lever 36 and permitting the latter to move upwardly with the change tumblers. The movement of the lifting tumbler 28 by the key, also swings the shut out tumbler 3O rearwardly and upwardly, and the latter then operates, by the engagement of pin 31 with the lower wall of the opening in the shut out tumbler 30, to lift the shut out locking fence 27 so as to carry its lip 26 into a plane above the lower projecting end of the shut out locking tumbler 22, thus freeing the latter. Hence normally the locking fence 27 is in engagement with the front lower end of the shut out looking tumbler 22 and holds it in the position shown in Figs. 2 and 8, in which positions its bolt dead locking projection 24 is removed from the path of the bolt, and its lip 23 out of contact with the locking dog 38. As the change key is turned to project the bolt, the front end of tumbler locking lever 36 will be moved upwardly and into contact with the face 38 of locking lever dog 38, the upper end of which latter will then be in contact with the lip 23 of shut out looking tumbler 22, and thus prevent any turning movement of the latter, under the influence of its spring during the time the lip 26 is out of contact with the lower front end of the shut out locking tumbler 22. As the bolt 15 is being projected these parts all go back to their normal position as shown in Fig. 2, thus leaving the bolt free to be retracted by any of the keys.

With the master key, shown in Fig. 10, the action is precisely as above described, except that the change tumblers are actuated by the center hitting of the master key engaging the lifting tumbler 28 which acting through its swinging lifter 29 elevates the change tumblers. lVhen however, the shut out key (Fig. 9) is used to project the dead bolt, its long center tongue or bitting, engages lifting tumbler 28, and by means of the swinging lifter 29, elevates the change tumblers 33 so as to permit the bolt to be shot. At the same time the lifting tumbler 28 coming in contact with pin 1 1 on the guard slide 40, elevates the latter so as to carry the projection 42 on its lower edge, above the shoulder 43 on bolt 15, thereby permitting the bolt to move outwardly without moving the guard slideforwardly. As the key leaves the lifting tumbler, the center tongue or bitting of the shut out key comes into contact with the rear end of shut out tumbler 30 as shown in Fig. 7, and a continued rotation of the key in the direc tion of the arrow, forces the rear end of tumbler down and its front end up, thus causing toe 32 at the front end of shut out tumbler 30 to lift the front end of shut out locking fence 27 sufficiently high to release shut out looking tumbler 22, thus permitting the latter to turn under the influence of its spring so as to carry its dead locking prodog 38, thus holding the latter solidly down 1 and in contact with the tumbler locking lever 36 as shown in Fig. 1. After the shut out key has passed and released the shut out tumbler, the shut out locking fence is forced down by its spring, and the lip 26 thereon entering the notch 25 in the shut out tumbler 22, positively locks the latter against movement and consequently deadlocks the bolts and locks every bolt locking tumbler against movement. After the parts have moved into the position last described, they can only be released and the bolt retracted by the shut out key, as the center tongues or bittings of the other keys are not long enough to engage and actuate the shut out tumbler 32.

To retract the bolt by the shut out key, the center tongue of the latter first engages the rear end of the shut out tumbler 30, and the lower wall of the opening in the latter acting against pin 31 on shut out looking fence 27 raises the front end of the latter until its lip 26 is clear of the notch 25 in shut out locking tumbler 22. This releases the latter and permits it to be moved forwardly against the action of its spring, by the forward movement of the front or vertical member of the locking lever dog 38 hearing against the lip 23 on said shut out looking tumbler 22. Dog 38 is positively elevated by the shut out key, hence as the key is turned to retract the bolt, after having passed the shut out tumbler 30, it first acts on dog 38 and moves it in a direction to release tumbler locking lever 36, and the continued movement thereof carries the up per end of tumbler 22 forwardly as above described, and also elevates the other tumblers so as to permit the fence 19 carried by the bolt to move rearwardly.

When the tumblers are actuated by a change key, the guard slide 40 is not lifted but is simply slid forwardly, as previously described by the contact of the shoulder 13 on the bolt, with the shoulder 42 on the slide and thus carries the lip 40 at the front end of said slide, up against pin 22 on the shut out locking tumbler 22, and operates to pre vent the shut out looking tumbler from falling onto the lever locking dog 38, during the movements of the shut out looking fence 27, as shown in Fig. 8. When however a shut out key is used, the lifting tumbler 28, makes contact with pin 44: on the guard slide and lifts same, thus permitting shoulder 43 on the dead bolt to pass under shoulder 42 on the guard slide. This leaves the shut out locking tumbler 22 free to fall onto the lever locking dog, the instant the lower end. of said tumbler is free of the shut out looking fence.

hen the dead bolt is projected by the master or change key, it is not deadlocked by the projection 24 on the shut out looking tumbler 22, but the tumblers, are, when the bolt is projected by any key, and also when retracted, locked by the tumbler looking lever 36, and when the bolt is projected by the shut out key, this lever 36 is in turn deadlocked by the shut out locking tumbler.

The center tongues or bittings on the shut out and change keys are of different lengths, yet each operates the lock perfectly for the reason that the tumbler work is set up for the shorter tongue of the master key, and when the shut out key is used, the tumblers are first set to register properly with the fence, then tumblers and fence are all carried up together a distance equal to the dif ference in length of the two tongues.

hen the master keys and change keys are used, the lower surfaces of the various tumblers represented by the letter 00 in Fig. '7 are carried up to such a height as to just come under fence 19 on tumbler 18, but whenthe shut out key is used the long center tongue carries the lifting tumbler 28 to the high point and in so doing the surface 02 comes in contact with the lower face of the fence 19 and then carries the fence and the other tumblers up the extra distance with out disturbing the relationship of the fence and the gatings of the several tumblers.

With the fence 19 on a pivoted tumbler, it will be seen that when an attempt is made to lift the tumbler with a picker, the tumbler l8 and its fence 19 will also be lifted, thus rendering it exceedingly diflicult if not impossible to line up the fence with the gatings in the tumbler. Again by means of the lifting fence tumbler, I am able to increase the number of changes in the change tumblers to an extent never heretofore attained.

In master keyed tumbler locks as at present constructed, no change key can be used which has any of its steps or bittings higher than that of the master key hitting which operates the lifter, but in this lock it a different master key is desired in order to provide a set of locks not operable by any of the keys of another set, the operating bitting can be shortened and in order to accommodate the tumbler work to this changed condition of the master key, a projection 4-5, shown in Fig. 5 is added to the case to hold all the tumblers up in their normal position, and the lifting fence tumbler 18 is cut away as at e6 in order to let the fence 19 drop a distance equal to the amount out off from the master key, the same amount being also cut off from the key sweeps of the change tumblers. With this construction the bolt when retracted may be freely projected by its change and master keys, the shut out looking tumbler 22 and shut out tumbler 30 remaining in inoperative position. When however the bolt is projected by a shut out key, the parts above referred to are brought into action and operate to lock the tumblers and the bolt against action by either the change or master key.

It is evident that many slight changes might be resorted to in the relative arrangement of parts shown and described without departing from the spirit and scope of my invention. Hence I would have it understood that I do not wish to confine myself to the exact construction and arrangement of parts shown and described, but

Having fully described my invention what I claim as new and desire to secure by Letters-Patent, is

1. In a lock, the combination with a knob roll back carrying anti-friction rollers, a latch bolt and spring actuated devices for projecting said bolt, of connected levers one of which engages the latch bolt, each lever pivoted to the lock case and located in the path of movement of the rollers on the roll back so as to be engaged thereby, whereby a movement of the roll back in either direction from its normal position, actuates the levers in a direction to retract the latch bolt.

2. In a lock, the combination with a knob roll back, antifriction rollers carried by the same, a latch bolt, and spring actuated means for projecting the bolt, of two levers each pivoted to the lock case and connected so as to move, in unison, one of said levers engaging the latch bolt for retracting the same, and each located in the path of move ment of a roller on the roll back, whereby a rotation of the roll back in either direction actuatcs the levers in a direction to retract the bolt.

3. In a lock, the combination with a knob roll back carrying anti-friction rollers, a

latch bolt and spring actuated devices for projecting said bolt, of two connected levers each pivoted to the lock case and located in the path of movement of the rollers on the roll back so as to be engaged thereby, the free end of one of said levers directly engaging the latch bolt, whereby the latter will be retracted by the movement of said lever in one direction.

4. In a lock, the combination with a knob roll back, antifriction rollers carried by said roll back, a latch bolt and spring actuated means for projecting the same, of two levers, one pivoted between its ends with one end engaging a shoulder on the tail of the bolt for retracting same, the other pivoted at one end to the lock case and provided adjacent its opposite end with an elongated slot for the reception of a pin carried by the adjacent end of the first mentioned lever, and a spring tending to hold the centrally pivoted lever out of contact with the tail of the bolt, the said levers being in the path of movement of the rollers on the roll back, substantially as described.

5. In a multiple key lock, the combination with a dead bolt and tumblers adapted to be operated by a plurality of keys including a shut out key, of means operable by the shut out key for locking the tumblers against movement.

6. In a multiple key lock, the combination with a dead bolt, and tumblers adapted to be actuated by a plurality of keys including a shut out key, of means operable by the shut out key for locking the tumblers against movement and for deadlocking the bolt.

7. In a multiple key lock, the combination with a bolt, a series of tumblers actuated by a plurality of keys including a shut out key, and a shut out tumbler actuated only by the shut out key, of means controlled by the shut out tumbler for locking the other tumblers against movement.

8. In a multiple key lock, the combination with a bolt, a series of tumblers actuated by a plurality of keys including a shut out key, and a shut out tumbler actuated only by the shut out key, of means controlled by the shut out tumbler for dead locking the bolt.

9. In a multiple key lock, the combination with a bolt, a series of tumblers actuated by a plurality of keys including a shut out key, and a shut out tumbler actuated only by the shut out key, of means controlled by the shut out tumbler for locking the other tumblers gglainst movement and for deadlocking the 10. The combination with a bolt carrying a fence and a series of tumblers cooperating with said fence, of means for locking said tumblers against movement, and a shut out tumbler actuated directly by a key and adapted to control the movements of said tumbler locking means.

11. In a multiple key lock, the combination of a bolt carrying a fence, a series of tumblers cooperating with said fence, a dead lock for the bolt, means for normally holding said deadlock in inoperative position the said means being actuated by one key of the series for releasing the dead lock and permitting same to move to deadlocking position, and means actuated by the same key for restoring the deadlock to its normal position.

12. In a multiple key lock, the combination with a bolt, a series of change key tumblers, a lifting tumbler and a swinging lifter carried by said lifting tumbler and engaging the change key tumblers for lifting them, of means for locking the change key tumblers against movement and a shut out tumbler operated by a key and controlling the positions and movement of the tumbler locking means.

13. In a multiple key lock, the combinationwith a belt, a series of change key tumblers, a lifting tumbler and a swinging lifter carried by said lifting tumbler and engaging the change key tumblers for lifting them, of means for deadlocking the bolt, and a shut out tumbler carried by the lifting tumbler and operated by a key for controlling the movements of the deadlocking means.

14. In a multiple key lock, the combination with a bolt, a series of change key tumblers, a lifting tumbler and a swinging lifter carried by said lifting tumbler and engaging the change key tumblers for lifting them, of means for locking the change key tumblers against movement, means for deadlocking the bolt, and a shut out tumbler carried by said lifting tumbler and actuated by the direct engagement of a key therewith for controlling the movements of the tumbler locking devices and the bolt deadlocking means.

15. In a multiple key lock, the combination with a bolt, change key tumblers and a lifting tumbler, of a shutout looking tumbler for locking the change key tumblers against movement, a locking fence for said shut out looking tumbler, and a shut out tumbler for moving said shut out looking fence out of contact with the shut out looking tumbler.

16. In a multiple key lock, the combination with a bolt, change key tumblers and a lifting tumbler,of a shut out looking tumbler for locking the change key tumblers against movement and for deadlocln'ng the bolt, a locln'ng fence for said shut out locking tumbler, and a shut out tumbler for moving said shut out looking fence out of contact with the shut out locking tumbler.

17. In a multiple key lock, the combination with a bolt, changekey tumblers and a lifting tumbler, the latter actuated by a shut out key, of a shut out looking tumbler for locking the change key tumblers against movement and for deadlocking the bolt, a locking fence for said shut out looking tumbler, and a shut out tumbler carried by the lifting tumbler and moved thereby and also moved by direct contact with the shut out key for moving said shut out looking fence out of contact with the shut out locking tumbler.

18. In a multiple key lock, the combination with a bolt, a series of change key tumblers and a lifting tumbler, of a tumbler locking lever, adapted to engage the tumblers for holding them against movement, a locking lever dog adapted to engage said tumbler locking lever, a shut out locking tumbler for holding'the lever dog down onto the locking lever, a shut out looking fence for holding the shut out locking tumbler ioo against movement, and a shut out tumbler carried by the lifting tumbler for actuating the shut out looking fence.

19. In a multiple key lock, the combination with a bolt having a shoulder thereon, change key tumblers, a lifting tumbler, a shut out looking tumbler for locking the change key tumblers against movement, a shut out looking fence for the shut out looking tumbler and shut out tumbler actuated by the shut out key for controlling the movements of the shut out locking tumbler, of a guard slide mounted to tilt and slide on the lock case and provided with a shoulder on its underside to engage the shoulder on the bolt and with a lip at its front end to. engage the shut out looking tumbler the said guard slide adapted to he slid forwardly by the bolt when the latter is actuated by a change key so, as to carry its lip, against the shut out looking tumbler and block the movement of the latter, and which will be tilted by the lifting tumbler so as to carry its shoulder out of the path of the, shoulder on the bolt, when the part-s are actuated by the shut out key, and then leave it in a position where it will not interfere with the free movements of the shut out looking tumblers.

20. The combination of a bolt, a lifting fence-tumbler carried thereby, a fence on said tumbler, change key tumblers and a lifting tumbler actuated by a key for lifting the change key tumblers and also the lifting fence tumbler and its fence.

21. The combination of a bolt, a lifting fence-tumbler carried thereby, a fence on said tumbler, change key tumblers, a lifting tumbler actuated by a key for lifting the change key tumblers and also the lifting fence tumbler and its fence, and means for deadlocking the change key tumblers against movement.

22. In a multiple key lock, the combination with a dead bolt and tumblers, adapted to be operated by a plurality of keys, of means actuated by all the keys, of the series for locking the tumblers.

23. In a multiple key lock, the combination with a dead bolt and tumblers adapted to be actuated by a plurality of keys, of means actuated by all of the, keys of the, series for locking the tumblers, and means 0perated by one key of the series for deadlocking the tumbler locking means.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

EDWARD ROSE.

Witnesses:

Pn nm NYcooD, JOHN GEDNEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner ofi Patents, Washington, D. G. 

